www.deadharddrive.com

bartlock · Active contributor Joined: 23 Mar 2010 Posts: 7

I have my Hitachi Model: HDT721010SLA360

A little square (resistor, chip) on the PCB blown away, can i replace that? anyone have experience with this?

Thank you.

I don't have the drive here, but later in the evening i will upload a pic to show the part that burned.

Thank you.

sunnydreamspace · Deadharddrive regular +5 Joined: 04 Jan 2009 Posts: 540

you can try to replace it first. be careful with your drive. don't make it worst. good luck.
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harddrivespecialist · Posted: Thu Mar 25, 2010 10:33 am Post subject:

Unfortunately, i don't have that board in stock, but waiting for PCB picture to be uploaded.
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bartlock · Active contributor Joined: 23 Mar 2010 Posts: 7

Here are the pictures:

http://www.media-itservices.com/burned1.jpg
http://www.media-itservices.com/burned2.jpg

You can see in the first picture a bump in the component and a leaked liquid in the base of the PCB.

harddrivespecialist · Posted: Sat Mar 27, 2010 11:14 am Post subject:

This is TVS chip, its acts like a power surge protector.
You can remove it and your drive should work again, BUT remember your drive won't have any protection. Best thing to do, is replacing it.
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bartlock · Active contributor Joined: 23 Mar 2010 Posts: 7

Well i have ordered 2 pcbs from a source i found, they are on the way.

I will replace first this chip and i beleive too, that is the only thing that is wrong with my drive.

I will let you know the result and where i buy the pcbs.

fzabkar · Deadharddrive regular +3 Joined: 02 Apr 2010 Posts: 210

You can replace the 12V TVS diode withn an SMBJ12A, and the 5V TVS diode with an SMAJ5.0A. They are available from Farnell, Mouser, Digikey.

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi everybody,

does anybody has made some business with this guy below and what was the result ? Is he serious ?

Thanks for a quick reply.

Huggy

--------------------------------------------------------------
Eric Lee
Deadharddrive regular +4

Joined: 26 Apr 2009
Posts: 308
Location: China

HK MingDi electronics Co., Ltd. http://www.hkmingdi.com/enindex.asp
MSN/E-mail：eric_lee8341@hotmail.com
Specialize in HDD PCB!!! Real in stock!!
Skype：eric.lee1984

fzabkar · Deadharddrive regular +3 Joined: 02 Apr 2010 Posts: 210

I haven't seen any feedback from end users, but the data recovery professionals at HDD Guru say he is reliable.

That said, if your PCB requires a firmware transfer, as is the case for most modern drives, then I don't believe he offers a free service. Instead I would recommend either onepcbsolution.com or hdd-parts.com.

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi,

thank you so much for your answer.

In fact, I'm engineer in electronics so I can do it myself. I know that i have to exchange the U5 NVRAM between my PCB and the clone PCB.

But before, I just request a good clone PCB and this guy seems to have it.

But he's based in China so i'm not really confident...

I'll check on your suggested websites.

Best regards.

fzabkar · Deadharddrive regular +3 Joined: 02 Apr 2010 Posts: 210

See http://forum.hddguru.com/viewtopic.php?t=26891&p=184089

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi everybody,
I'm looking for a clone for my dead Hitachi HDD - REF : HDT721010SLA360 (Date Code : Aug-2009 - P/N : 0A37993 - S/N : MS0ZZ3YK - MLC : BA3013).
Suddenly, something has happened on the PC startup and now, this HDD is not recognized by the Bios.
The power supply is Ok on several point of the PCB but nothing happen (no noise, no motor vibrations...).
I understood that i have to exchange the U5 NVRAM from my hard disk to the clone. I'm engineer in electronics so I think i can do it myself.
BUT, unfortunately, after many (night) hours, I haven't found any exact complete clone HDD. Sometimes, it's the good PCB reference but not the good HDD reference and sometimes it's the good HDD reference but not the correct PCB sticker.
So, my question is : Is it really necessary to find the complete reference of my complete harddrive or just a clone compliant PCB (same Sticker reference = 0A29987 BA3263 _ MzK929 06V1).
For the last part of the reference, it seems not necessary to have the exact one.
An other point : I don't remember if i have uploaded a firmware update on this HDD (I don't know exactly if it's possible). Is it a problem or not ?

Please, fell free to contact me for an help, answer, indication.
Thank you for your Help.
Best regards.

fzabkar · Deadharddrive regular +3 Joined: 02 Apr 2010 Posts: 210

http://www.donordrives.com/hard-drive-pcb-donor-match
http://www.donordrives.com/pcb-replacement-guide

FWIW, I no longer recommend the above company.

See this thread:
http://forum.hddguru.com/viewtopic.php?f=1&t=25524

If you would like to measure some onboard test points, then upload a photo of the component side of your PCB.

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Thanks for your answer,

I don' know how to upload a picture.

Can you help me please ?

Best regards.

fzabkar · Deadharddrive regular +3 Joined: 02 Apr 2010 Posts: 210

Upload the photo to a file sharing service.